Fuel-oil burner.



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.fTTEIFQNIPny L. H., DAVID.

FUEL OIL BURNER.

APPLICATION HLBD JUNE 2, 1914.

L. H DAVID. PULL oIL BURNER. APPLICATION FILED JUNE 2, 1914. Ll SL48@Patnted Maf. 9, MM5.

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WiTNESSES. `lun/ENTR I L @an mru?.

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Mmmm( steam and oil LEQN H. DAVID, F FORT CASEY, WASHINGTON.

FUEL-OIL BUR.

Specification of Letters Iatent.

Patented Mar.; 9, ltl.

Application filed .T une 2, 1914. Serial No. 842,463. y

v ToaZZ whom z't may concern Be 7 it known that I, LEON H. DAVID, 'a

`citizen `vof the United States, residing at Fort Casey, in the countyof Island and State of Washington, have invented certain new and usefulimprovements m Fuel-@1l Burners, of which the following is aspecification.

rfhis invention relates to improvements 1n fuel oil burners, and has forits object the provision of means for atomizing and breaking up theheavy hydro-'carbone and securing a perfect admixture of steam therewithto linsure the complete combustion thereof.

.A further objectof the invention is the provision of valve-controllingmeans of simple construction whereby the passage of may be regulated toa relatively fine adjustment and which is not liable to hecome cloggedor otherwise rendered unt for successful and economical service. v

A still further object of the invention is the provision of meanswherehv, should the oil passages become clogged, they may be instantlycleared by passage of steam therethrough under pressure in a reversedirection to the normal course of the oil..

The invention consists in the novel con- 'struction of loil-atomizingdevices and of valve-passages for the admission of oil and steamthereto, the combination of such ele- Y ments and the adaptationtherewith of parts and devices. as will he hereinafter fully explained',illustrated in the accompanying drawings; and iinally set forth 1n theappended claims.

Referring to said drawings, Figure l is a view in vertical section ofapparatus emhodying niv-invention partly broken away. Figs. 2 and 3 arefront and rear elevational views of the saine, respectively. Fig. t is afragmentarv detailL view partly in vertical section, on line if- 1t ofFig. Fig. 5 is a `fragmentary detail side elevational view of a valveelement shown detached.

Referring to said'views, the reference numeral 't indicates a steamvalve casing having a tubular tting 5 adapted to be conrmunicativelvconnected to a pipe leading to a source of steam supply under pressure(not shown). Said fitting includes a passage 6 and a restricted aperture7 communicating with the valve 'chamber 8. `Said aperture 7 ispreferably of relatively long and narrow configuration having its largeraxis extending longitudinally of the burner. Said valve-chamber 8 isformed with a tapered seat arranged to receivea frustoconical interiorlychambered valve member 10 having its axis of rotation in arallel withsaid major axis of the aperture The valve stem 1l extends forwardlythereof and is mounted in packed gland-bearing 12, as customarily. Thevalve member 10 is provided vwith a port 13 adapted to register whensuitably manipulated, with said aperture 7. Said port extends throughthe side walls of said valve and communicatively connects said aperturewith the interior chamber of the valve and with the passage 15 leadingto the burner propera Port 13 extends circumferentially in aline'nentwith the aperture? for a considerable distance about the valve 10 in aprogressively di verging opening from a point 16 at one extremity to itsopposite eXtremitv 17where itis approximatelv of a width to include theentire length of the aperture 7. A portion ot' the material of saidvalve is retained. as at 18., suiiicient to lend integritvand strengthto lthe valve member and whereby. the valve is closed to the passage ofsteam when the same is caused to lolock' the aperture 7, as indicated inthe views.

20 indicates a handle operatively connected to said valve stein il whichis provided at its opposite end with a pointer 23 adapted to heassociated with a dial '221 mounted or formed on the valve casing andsuitablv inscribed with inscri pticns, as 'at '23, 231l and Q32,respectively. indicating the relative position of the valve; thus., whenthe relatively narrow point 16 is in register'with the aperture 7, thepointeri will indicate the inscription 23 descriptive of .the opencondition of the valve between saidv inscription about said dial to apoint correspondine to the widest portion 17 oithe port, as indicated at231, equal graduate marks as an assistance te the operator in regulatingthe prcportione of steam andoil. The yhalence of the per The dial isdivided into irneter of said dial corresponds to the blank portion v18*of the valve and is distinguished by an inscription 232 signifying thesame.

lmmediately below said steam valve pparatus is positioned a. fuel-oilcontrolling valve consisting of a casing 26 provided with i a fitting 27adapted to make communicative connection of the oil passage .28 of saidcasing and an oilsupply pipe, not shown., leading from-asource-otoil-supply Yunder pres 36 and pointen 37 associated with a dial 38inscribed in an analogous manner to the described dial 22. Mounted atone end in said casing 26 and communicatively connected with saidchamber 31 is an oil-pipe 40 extending horizontally therefrom andadapted to extend Within a discharge pipe and tip to protrude Within afurnace and provided at its opposite extremity with a nozzle 41 havingan outlet opening for the emission ot' cil therethrough. Communicativelyconnected with said passage 15 is a horizontally arranged steam pipe 42disposed concentrically about said oil pipe 40 having a bore ofsulicient diameter to all'ord a passage 43 thereabout. The steam pipe 42extends to Within a short distance of the inner extremity of oil-pipe 40and is provided at 'such extremity with screw-threads 45 makingconnection with the base 46 of a burner-tip 47. Axially of said burnerthe base is formed With an opening 48 adapted .to'receive the nozzle 41of the oil pipe, the lopening48 being of suli'cient diameter to allow ofthe passage of steam about said nozzleand also provided with a pluralityof spirally directed grooves 50 through which the major portion of thesteaml is permitted to pass and give a. whirling or spiral direction.rlhe burner-tip 47 is provided with a chamber portion 51 beyond the opening 48 and into which the-nozzle 41 slightly projects and in which theoil and steam are mtermingled and through the velocity and whirlingmotion of the escaping steam the oil is thoroughly broken up oratomized. The combined oil and steam is thereupon permitted to escapethrough 'the apertures 52, 52 in-bevel plates 53, 53, whence it issuesinto the combustion chamber of the furnace through slots 55, 55,` Theupper 'portion ot said valve casing 26' is provided with `a b vpass 56connecting the chamber 31 with the meinen steam passage 15 in alinementwith the ap-a erture 30 andport 35. Said b -pass is provided with aneedle-valve 5 controlling samefwhereby steam may becaused to pass'vfromthe passage 15 through the port 'p35 into the chamber 31,1-andthence throughv the member 32 is shifted to expose lor cover `the'aperture 30.

It will be -noted that the adjustment of the steam valve 10 may be setwith great accuracy and delicacy, ranging from the slightest openingequivalent to a pin-point at the extremity 16 of the valve 10 to thefullest area of the aperture 7,it` being un derstood that the axis ofsaid aperture l extends transversely to the length of the port 13 andthe full'opening of said aperture is only obtained by the rotation ofthe valve through the major portion of a revo lution and through themovement of the valve from initial point indicated at '232 wherein thevalve is closed, past the point indicated at 23 Whereat the valve isslightly open. rThe opening progressively widens as the handle isrotated in the properv direction until the full opening is obtained atthe point .indicated at 231. A further movement of the valve handle inthe same direction immediately shuts od the supply of fluid orreversely, the handle may be rotated in the opposite direction whereby afull opening is obtained at once Without further operation of the valvehandle. The valve 32 is operated in a similar manner.

The invention is simple in its construction and mode of operation, isdurable in use and is not liable to become disordered in service. 'lhevalves are adapted to give perfect regulation and are Well adapted forthe purposes intended.

Having described my invention, what l claim, is-

1. ln a device of the class described, steam and oil supply pipes,avalve :tor each ot the pipes consisting et a chambered casing having anelongated aperture in its side wall, the major axis of the aperturelying parallel with the axis of the casing-chamber, a rotatable valvemember having an elongated triangular portyvhose greatest length isdisposed transversely to the major axis of the aperture, and outer andinner concer: tric steam and oil tubes communicatively connected 'to thesupply pipes.

2'. In a device of the class described, a steam` tube arranged toprotrude within a furnace, an oil tubel arranged concentrically Withinth steam tube, `a steam supply pipe and oilsupply pipe respectivelyconnected with the tubes, valves in the supply pipes eachconsistingof.latjtapered valve chamber forming a portion ot 'the supplyduct, the

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meme@ Signed at Fort Casey, Wash., this 26th day of May, 1914.

LEON H. DAVID.

Witnesses: y

D. W. CRADDOCK, JOHN J. ERNST.

